Well, I managed to make a script that reads a video file and writes it to a hard drive in a special format, which is then read by a LuaC program (via digilines attached SCSI) and displayed on an rgblightstone screen.

Testing as a normal player, on your localhost server, not only allows you to test the mod's technical aspects but also how the mod fits into the overall gameplay experience from a normal player's perspective.

Perhaps official Minetest YouTube videos going through each installation step for each supported OS. Then post the links to those official videos on the MT website and forums. "how do i get minetest on my computer" -> "Go to minetest.net and watch the install videos."